Apricorn’s DVR Expander II is a quick and easy way to add recording capacity to your DVR. The new, quiet, heat dissipating design is simple to install and works seamlessly through the eSATA port found on the back of compatible DVRs such as the Scientific Atlanta 8300 series. The DVR Expander II has been designed to accommodate the demands of recording 2 high definition programs while simultaneously playing a recorded High Definition program. Ships complete with eSATA & USB cables, power supply and illustrated installation manual.